Lock



N. B. HURD Oct. 27, 1931.

LOCK

Filed April 13. 1929 2 Sheets-Sheet 1 INVENT 56 WWW ATTORNEYD Oct. 27, 1931. N B, H RD 1,829,713

LOCK

, Filed April 13. 1929 2 Sheets-Sheet 2 ATTORNEY S.

Patented Oct; 27, V 1931 NOR-MAN LB, norm, onnnw LBRITAIVN,

commcrrour connncmr'onnnssrenon mo THE AMERICAN HARDWARE CORPORATION, OF NEW BRITATN, CONNECTICUT, A CORPORATION OF I 1 Application fi led April s,

This invention comprehendscertain new 1 and 'luseful improvements 'inglocks and is of y f particular value mconnection with locks for 7 different keys adapted to the lock;

dead-bolt. 6 is a cylinderlock mounted on the outside of the case 1. 7 is a roll-back designed to be the lock case. When the partsstand as shown the inside of the door so that a knob the latch-bolt 4 will be retractedthrough'the medium of a lever 8 and the hotel sleeping rooms. 1

The general object of this invention is to provide certain'improved features of construction which lend themselves to simphcity, economy of construction,

durability and safety. Specifically these various objects will appear clearly to one skilled in the art} from a reading of" the following description and an examination of the accompanying drawings, in wh1ch.;

Fig. 1 is a side elevation of mynew lock with the cap removed'to show the internal construction and arrangement of parts; Fig.2is a similar 'view with part 'of'the cap' in place showing certain internal parts in a different position from that-indicated in Fig. 3 is a perspectiveview showing the parts somewhat-separated orofi'set;

Fig. 4 is a horizontal cross-sectionof the lock case on the plane of the dead-boltshowing in plan certain of the internal parts; I Figs. 5 and 6 arerespectively views of two Fig. 7 is a plan view of a detail. 1 is the lockcase. 2'is the cap. 3 is the face-plate. 4 isthe spring'latch-bolt. 5 is a mounted in the case 1 and operated by the usual knob (not shown) at latch-bolt'tail 9. i 10 is another "lever for retracting' the latch-bolt 4. This lever is piv-' case, and is itself operoted at 11 in the lock 'ated by still" another lever 12'pivoted at 13 in a in Fig. 1 this lever 13 may be swung to rerection. The normal tract the latch-bolt 4, b'ythe turning ofthe. cylinder lock roll-back lt in a clockwise diposition of this cylinj der lock roll-back 141 is shown in Fig. 3, and

. the cylinder lock plug, turned in either direction. With the parts as when a proper key is introduced'to release this roll-back may be E (Figs. 5 and 6), the former The dead-bolt is l 3, in which it will be by turning such diametrically opposed LOCK 1929. Serial No. 354,723.

shown a Fig. 1, the latch-bolt inlay be tracted by the'use of either of the keys For being the regular key such as would be furnished the .user

of the room and ajfioor attendant, thela-tter being a special key ordinarily keptfin the possession of the proprietor and used for certain emer encies. In the particular cylinder lock shown, the roll-back14 is provided with an auxiliary slidable head .15 which is normally retracted so as to stand in the position shown" in Fig. 3. When the key P is inserted in the cylinder lock, it, being short, will have no effect on the position of the head 15.

When, however, the special key E is inserted," it, being1longer,'will cause the head 15 to project outwardly to the position shown in Figs. 1 and 2, in which position it serves to perform a certain function designed only to "be performed by the use of the emergency key E.

provided with a tail portion of unique design and construction certain parts of which may best be seen'in Fig.

end of the tail is recessed at 16. 17 is a stop shoulder at the rear of this recess 16. This dead-bolt tail is also provided with a passage '19 to provide clearance for a roll-back hub 20 "which is mounted to rotate in the lock case."

21 is a horizontal slot in the tail bolt into which projects a fixed post or stump 22 to guide the rear end of the dead-bolt tail as it 'isreciprocated. On the lower part of the of the deadlatch-bolt tail are two more stop shoulders 2344011 opposite sides of atlower passage.

. These are best seen in Figs. land 2. 25 is a lever pivoted at 26 on the side of the dead-bolt 5 The rear end of this lever extends up into the recess 16so as to be engageable by the head 15, of the cylinder lock-roll-back when the emergency key Eiis used and by which head only can it be depressed sufficiently far to accomplish the releasing of the dead-bolt so that the latter may be projected from the posi tion shown in Fig; 1 to that shown in Fig. 2. Before describing this operation, it is desirable to describe the construction of the roll back 20. This roll-back is provided with two noted that the upper rear' 75 wings or arms 27 28 00 spring for nose 30 of the rllba ok'20; Thefree end of:

'7 the lever 31 is provided with i nclines.34- 3,5.'

- The hub ofthe roll-back 20 ispr ovided with the usual spindle passage for receiving the r ordinarythumbturn 18 such. as located on the 7 inside of the door towhich the lock is applied 1 so that any one in theroom may, by rotating. said thumb turn only a quarter of a turn" project or retract thei'dead-gboltq The occupant of the room maythu'sbe afiordedtha double security of a deadbolt and a latch-bolt,

fneithe'r of which can'be operatedfrom, the

- iolrltisiderbftlle door exceptby the use of'a; suit- I,

ablekey. V

:the' lever 10. ''When, 7

, Sis projected as shown inFig. 2,;thje lever 'IfIthe parts stand asshown with the dead-bolt retraeted,'the holder of either one of the keysPor E may retract thellatchbolt by inserting the key-in the cylinder lock and turning the -rollback in a direction .to engage the lever" 12,- which when tilted will retract thelatch 4 through the medium of "however, the deadrbolt 12 'willfbe tiltedfrom theposition shown in Fig. lzto,that shown 1n Fig. 2, so that its end will stand "out of range of-the roll-.backQl t- 1 and its.head 15.. This tilting of the lever 12 V 7 is effected'by the shoulder 36 which simply I rides. under an incline 37 on the lever 12 i the latter.

5 when-the dead-bolt is ected, thus lifting It follows that when the occu-v pant of aroom has closed his door. and' has lprojectedrthe dead-bolt'S-by the use 'ofa thumb turn associated withthe roll-back 20, 94.0

I tendant the room cannotbe entered by-the floor ator chambermaid who is provided only with a regularkey If, however,

' I access is necessary, the proprietor'may use hisfspecial emergency, key E which is soldewherethey are free of thestop shoulders on v the deadbolt tail thus leaving the dead-bolt e o 'b re r o ated byth nd f e cylinder lockj roll-back. When the cylinder lockfrollback has been rotated from the position shown will be seen to rest on the wing back 20. Hence, as thelever 25 is depressed s lack roll-back tobe projected so that by turnmg said icylinderxlock'rolleback in a clock wise direction, the head 15 will be brought into contact with the lever 25;(F,ig; 2), depressing the same. 7

28 of therollwisedirection, the effect of whichis to move;

the ends of the armsf27%28 29 to aposition inFig. 2 to vthat shown in Fig. 1, the dead bolt 5 willbe fully r'etracted at which time theIroll-b ack will also be shifted, by the' acti'on of thedead-bolt tail on;

ieiarx 29yom h P9 6 1 show-11i Fie- 2w 27 2s is- The rear end of the lever this roll back 20ywil l be' rotatedin a clockthat shown Fig. 1, wherein the arms 27-29 a V will stand in front of the shoulders 17 23 to positively hold the dead-bolt retracted. T he ownerof the emergency key E may advance the deadbolt by simply reversing-the' direction of ,rotation'of the key until the dead-bolt 5 is fully projected whereupon'the roll-back 20 will resume the reversed position shown in I Fig. 2, and the wing 29 will stand at the rear of the stop shoulder 24 of thedead-bolt 5' to positively hold theflatten-projected. It will be understood that the function of thexlever 25 is partly to frictionally hold the roll-back 20in itstwo operative positions indicated irespect'iv'elyf'in F igs'; '1 and 2,'and partly to "throw the roll ba ck to its extreme ,dadrbolt blocking fp ositions; when the dead-holtf 1S fully advanced or fully"'Iretracted, the fro lL' back being displaced from .saidfpositions when operated by the key; By thefirst de pressing, movement y ofthe lever 25, after which astheicylinderlock roll-back is turned to reciprocate the dead-bolt. the movement of said. deadbolt will rotatethe roll-back 20 throughthe medium ofthe arm-29 which is thenpositioned in] the notch or opening "between the shoulders 23- 24 I Inasmuch as the oper t onof the various parts 'hasibeen described as -incidental to*the I description of the coinstruction,itis unnecessary to repeatthe same at length further than to. say that when; the lock is operated by any regular key fP I a e such as provided to-the guest and the chamsuch as shown in Fig. '5 and bermaid or floor attendant, it is within the power ofthe guest to enter his roomatzany time thatthe: dead-bolt 5 is, not projected.

It is alsopossiblefor the floor attendant to y enter-theroon so long as the dead-bolt is not projected; If however the guest has entered and h s pro side the floor; attendant isjshut out, .but access'may be had to the roomby the owner of y I, a-special emergency key E-shown in Fig. 6. slgned as to cause thehead 15 on the cylinder If the room is empty, and forany reason the proprietor. wishes to elose the vroom off,

he may, the use.of the emergency key E 'pro ect the dead-bolt from; the outside, thus makingit impossible for anyone fusing the ected the dead-bolt from the inthan the other key it will be, understoodthat there are various of making the special key differ from the regular key so as to attain the endsisought. f For convenience of expr'ession I have referred to the .key such as providedto-a guest or floor attendant as a regular key, and the key heldlby the-propriroll-backfrom the inside of a door to which tl e lockjis 'appliedand keywoperable means andblockin'g means on the roll-back cooperating'with said stop shoulders, a lever on said j to turn said roll-back from the outside of such a door, stop shoulders on the dead bolt and .blocking means on opposite sides of the hub of said roll-back'forendwise cooperation I the stop shoulders.

3. In a look, a latch-bolt, a dead-bolt, a combined dead-bolt operating and blocking rollback, manually operable means to turn said roll-back from the inside of a door to which 7 the lock is applied and key operable means to turn said roll-back from the outside of such a door, stop shoulders on the dead-bolt dead-bolt acting between said roll-back and thekey operable means'to displace the rollback fromits blocking position.

4. In a look, a latch-bolt, a dead-bolt, a combined dead-bolt operating and blocking rollback, manually operable means vto turn said roll-back from the inside of a door towhich the lock is appliedandkey operable means to turn said roll-back from the outside of such adoor, stop shoulders on the dead-bolt and blocking means on the roll-back coopera ing position when the dead-bolt reaches ating with said stop shoulders, a lever on said dead-bolt acting between said roll-back and the key operable means to displace the rollback from'its blocking position, and means on the dead-bolt coactingwith said roll-back to turn the latter as the dead-bolt is reciprocated. v e

5. In alock, a latch-bolt, a dead-bolt, a-combined dead-bolt operating and blockingrollback, manually operable means to turn said roll-back from the insideof a door to'which thelock is applied and key operable means to turn said roll-back from the outside of I 1 such a door,stopshoulders onthe dead-bolt and blocking means on the roll-backcooperating with said stop shoulders, a leveron said dead-bolt acting between said roll-back and the key operable'means to displace the roll-back from its blocking position, andmeans on the dead-bolt coacting withsaid roll-back to turn the latter as the dead-bolt is reciprocated, and a spring impelled means to move the roll-back to its dead-bolt blockthe end of its reciprocal movement.

6. In a look, a latch-bolt, a deadbolt, a combined dead-bolt operating and blocking roll-back, manually opei'ablemeans to turn v said roll-b'ack-from theinside of a door to "which the lock' is applied and keycoperable meansito turnsaid roll-back from the outside of such a door, stop shoulders onthe deadbolt and blockingmeans' on the roll back cooperating with said stop shoulders, a. lever ionsaid dead-bolt'acting between said rollback and the key operable means to displace the roll-back from its locking'position, and

means to'throw said roll-backto its blocking position at both vextreme positions of: said dead-bolt. v A

7;;I-n a lock,:-a reciprocable dead-bolt a roll-back for manually advancingand retracting the same and for blocking the same in its advanced and its retracted position; a key operable means for releasing said rollback from its blocking positionsv and for reciprocating said dead-bolt, and connecting means between said dead-bolt and roll-back for rotating the latter from one blocking position to the other blocking position.

8. In a lock, a reciprocable dead-bolt, a roll-back for manually advancing and retracting the same and for blocking the same in its advanced and its retracted position, a key operable means for releasing said rollback from its blocking positions and for reciprocating said dead-bolt, and connecting means between said dead-bolt and roll-back for rotating the latter from one blocking position to the other blocking position, and

a spring means to' move said roll-back into its blocking position. 7

9. In a look, a reciprocable dead-bolt, a roll-back for manually advancing and retracting the same and for blocking the same in its advanced and its retracted position,

a key operable means for releasing said rollback from its blocking positions and for reciprocating said dead-bolt, connecting means between said dead-bolt and roll-back for rotating the latter from one blocking position to the other blocking position, and latch bolt, saidkey operable means coacting therewith to retract the same. I v

10. In a look, a reciprocable dead-bolt, a roll-back for manually advancing and retracting the same and'for blocking the same in its advanced and its retracted position, a key operable means for releasing said rollback from its blocking positions and formciprocating said dead-bolt, connecting means between said dead-bolt and roll-back for rotating the latter from one blocking position to the other blocking position, and a spring latch bolt, said key operable means including a roll-back operable by onekey to'operate said latch bolt, and also including a shiftable roll back head operable by a different key to reciprocate said dead bolt. p

11. In a lock, a reciprocable dead-bolt, a

roll-back for manually advancing and retracting the same and for blocking the same a spring 

